Effects of encapsulation process parameters of calcium alginate beads on Vitamin B12drug release kinetics

2009 ◽  
pp. n/a-n/a ◽  
Author(s):  
Nada Abubakr ◽  
Amanthi Jayemanne ◽  
Niken Audrey ◽  
Sean Xuqi Lin ◽  
Xiao Dong Chen
Keyword(s):  
Process Parameters ◽  
Calcium Alginate ◽  
Release Kinetics ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
Encapsulation Process

scholarly journals Investigating the Unexpected Behavior for the Release Kinetics of Brilliant Blue Encapsulated into Calcium Alginate Beads

2009 ◽  
Vol 12 (1) ◽  
pp. 69 ◽  
Author(s):  
Magdy M. Elnashar ◽  
Mohamed A. Yassin ◽  
Abou El-Fetouh Abdel Moneim ◽  
Elsayed M. Abdel Bary
Keyword(s):  
Calcium Alginate ◽  
Release Kinetics ◽  
Alginate Beads ◽  
Brilliant Blue ◽  
Unusual Behavior ◽  
Calcium Alginate Beads ◽  
Alginate Concentration ◽  
Optimum Formulation ◽  
Kinetics Of ◽  
Unexpected Behavior

This work is focused on investigating the unexpected behavior for the release kinetics of brilliant blue (BB) encapsulated into calcium alginate beads. By increasing the alginate concentration from 1-3% (w/v), the release of BB over time was found to follow two different behaviors. For the first two hours, the order was 1% > 2% > 3%, after which it was as follow: 1% > 3% > 2%. The unanticipated increase in BB release using 3% (w/v) alginate beads after two hours over that of 2% (w/v) alginate was examined by the swelling and bursting tests. The results were showing clear evidences by data and image the unusual behavior of 3% (w/v) alginate beads at two hours of swelling. This unexpected behavior for the 3% (w/v) alginate beads might be due to the higher osmotic pressure inside the beads. Overall, 2% (w/v) calcium alginate beads were considered to be the optimum formulation showing an excellent carrier for targeting drugs to the intestine, where the swelling of the beads were 60 % in the acidic medium, it was 5000 % in the alkaline medium.

scholarly journals The Enzymatic Decolorization of Textile Dyes by the Immobilized Polyphenol Oxidase from Quince Leaves

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Gulnur Arabaci ◽  
Ayse Usluoglu
Keyword(s):  
Polyphenol Oxidase ◽  
Calcium Alginate ◽  
Enzyme Stability ◽  
Industrial Effluent ◽  
Alginate Beads ◽  
Textile Dyes ◽  
Kinetic Properties ◽  
Synthetic Dyes ◽  
Cydonia Oblonga ◽  
Calcium Alginate Beads

Water pollution due to release of industrial wastewater has already become a serious problem in almost every industry using dyes to color its products. In this work, polyphenol oxidase enzyme from quince (Cydonia Oblonga) leaves immobilized on calcium alginate beads was used for the successful and effective decolorization of textile industrial effluent. Polyphenol oxidase (PPO) enzyme was extracted from quince (Cydonia Oblonga) leaves and immobilized on calcium alginate beads. The kinetic properties of free and immobilized PPO were determined. Quince leaf PPO enzyme stability was increased after immobilization. The immobilized and free enzymes were employed for the decolorization of textile dyes. The dye solutions were prepared in the concentration of 100 mg/L in distilled water and incubated with free and immobilized quince (Cydonia Oblonga) leaf PPO for one hour. The percent decolorization was calculated by taking untreated dye solution. Immobilized PPO was significantly more effective in decolorizing the dyes as compared to free enzyme. Our results showed that the immobilized quince leaf PPO enzyme could be efficiently used for the removal of synthetic dyes from industrial effluents.

scholarly journals Improving the Stability of Astaxanthin by Microencapsulation in Calcium Alginate Beads

PLoS ONE ◽  
2016 ◽  
Vol 11 (4) ◽  
pp. e0153685 ◽  
Author(s):  
Shen-Fu Lin ◽  
Ying-Chen Chen ◽  
Ray-Neng Chen ◽  
Ling-Chun Chen ◽  
Hsiu-O Ho ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
The Stability

Calcium alginate beads motion in a foaming three-phase bubble column

2017 ◽  
Vol 324 ◽  
pp. 358-369 ◽  
Author(s):  
Gabriel Salierno ◽  
Mauricio Maestri ◽  
Stella Piovano ◽  
Miryan Cassanello ◽  
María Angélica Cardona ◽  
...  
Keyword(s):  
Calcium Alginate ◽  
Bubble Column ◽  
Alginate Beads ◽  
Calcium Alginate Beads ◽  
Three Phase
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